Spraying device.



AG. A. URBAGH.

SPBAYING DEVICE.

APPLIokTIoH FILED ooT.25, 1909.

968,210. Patented Aug.23,191o.

i l 'li 1729"?- 37 mmm Z6 `L\ i A am w3 Il;

WITNESSES: INVENTOR I @4g/@mm I @QYQM ATTORNEY En. sears x srmriiie ni'ivrcn.

Toallwhomitmycomm:

Be it known that I, GUs'rAvn A. URBACH, a citizen of the United States, and a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania,have invented a. new and` useful Improvement in Spraying Devices, of which the following is a specification.

My invention relates to devices for spr'a ing or atomizing aints and other liqui s, and it has for its o ject to' provide a device of this 'character in which air is shunted from a nozzle into the liquid receptacle and there utilized to apply pressure to thel surface of the liquid for the purpose of assisting its discharge from the nozzle, and in which simple, effective and reliable means are employed for governing the supply of air botli' to the nozzle and to the liquid receptacle. l

- F'giire 1 of the accompanying drawing is a view, in side elevation, of a device einbodying the resent invention, some of the parts being roken `away for the sake of cleainess of illustration. Fig. 2 is a plan -and sectional view of the device, the sectional view being along the line II-II of Fig. 1. Fig. 3 is another plan andvsectional view of the device, the sectional view being along the line III-III of Fig. 1. Fig. 4 is a part sectional view of the device along the line IV-IV of Fig. 2, and Fi 5 is a art sectional view of the device a ong the 'ne' vV-V of Fig. 2.

.The device comprises a receptacle 1 having an annular top member 2, to which a end of the passage 20, which is of larger ca p 3 is secured by means of bolts 4 and wing nuts 5, the lower ends of the bolts be- *i ing pivote'dlin blocks 6 that have recesses in their upper sides and that are soldered or otherwise so secured'to thev lower 'sides of the top member 2 as to provide an air-tight joint. A lead or othersuitable gasket -6 is interposed between the top the. cover 3, the top mem er? 2 being provided with a short 'cylindrical extension at its inner edge that is tapered tov a rathersharp edgeland is seated in the'gasket 6 which is compressed and forced into a seattherefor in the cover 3, an air-tight joint between the top member 2 and the cover 3 being thus. provided.

. Upon' the upper face of the cap 3 is a block t withoriishsilitably secured thereto, and that is provided witlthree parallel, flongitudinah `and oil', or regulated, the pipe member 2 and' vthis, passage.

In the smaller. ends'of the'inlet and aux" 7 'that is either formed integral there? I Specification of Letters Patent. p Patented Aug, 23, 1910;` Application led October 25, 1909. .Serial No. 524,313. I'

at one end than at the other end, and theA cylindrical chambers 8,- a and 1o, the cham.

lar er ends are closed by means of'screws 11 an 12, the screw l2 having an aperture 13 that provides a communicating passage between the chamber 9 and thek exterior.

Extending from one sideof the block 7 is an lair-supply pipe 14, that communicates with the .inlet chamber 8-at its larger end, and that is provided with a stop-cockl whereby the air pressure may be turned on 1 4 being con nected, when the de 'vice is in` use, ,withany suitable source of air pressure (not shown).

The smaller portion of the inlet c'hamber 8 is connected to the main outlet chamber 10 'by means of a passage 16, that is drilled 'from the top of the blockf7 downwardly and at a slight inclination'to the` vertical, and the upper end'- ofwhich is' closed by means of a tap screw 17. The main outlet chamber 10 is connected th the smaller portion ofthe auxiliary ou let chamber 9 by means ofl two communicating drilledpassages 19 and 20,respectively, the passage 19 extending vertically downwardY from the topv ofthe block, and the passage 20 extending from tlie side of the block inwardly to the. chamber 9 at an inclination to the vertical.`

The upper end of the passage 19 is closed by means of a tap screw 21, and the outer size, or diameter, than its inner end, is closed by means .of a screw 22A having a inner'end that extends into the sma er portion of thepassage, the screw .22 being provided for. the purpose of regulating the d egrec of communication between the main ointed and auxiliary outlet chambers. The larger end of the auxiliary outlet chamber 9 isl con:

nected by means of a passage 24 with the interior of the receptacle 1, the air forsii plying pressure to the surface of the liquid within the receptacle being admittedthrough los iliary outlet chambers 8 and 9`are pistons' 1 26l and 27, respectively, that are connected at their outerends by means of a plate 28- whereby -both pistons are operated simultaneously, and' that are' provided. with re 3l against its seat.

duced adiacent to the opening o the passage reduced portion 29 of `the piston 26 being near its inner end, and the reduced portion 30 ofthe piston 27 being at approximately its middle. The piston 26. is provided for the purpose of operating a valve which governs the admission of air from the larger lend of' the inlet chamber 8 to the smaller end, and from there through the passage 16 into themain outlet chamber l0, the said valve comprising a ball 3l that is normally pressed against a seat vprovided therefor at the junction of the smaller and larger portions of the inlet chamber "8, ley-means oli' a helical compression spring 32 that is interposed between the ball andthe inner end of the screw ll, ,The spring 32 also serves to normally maintain the pistons 26 and 27 in the positions shown.

lt will be noted that the air pressure -within the larger end o the inlet chamber assists the spring 32 in maintaining the ball rlhe piston 26 is rel@ into the chamber 8, so that when the ball is raised from its seat, air may enter the said passage. The position of the reduced portion 30 of the piston 27' is such that,

lwhen the piston is pressed inwardly, it is first brought opposite the opening of the passage 20 into the smaller end of the chainber 9, and is then caused to extend into the larger end or" the said chamber, thus permitting communication between the main lib ` nearly reached, the inner limit of its travel,

communication of the chamber 9 with the exterior being thereby cut ed. .Air is then discharged from the chamber 9 into the ref ceptacle l. -v

1 Screwed into one end of the block 7 lis a rod 1&7 that is artially bored out 'at the end that is screwed into the block 7 to form an extension of the main' outlet'chamber 10. Communication isc effected, by means of passages 39, between the recess 38 and an annular nozzle chamber 40 within a cap 4l that is threaded u on the free end off the rod ,and is provide with a central aperture in its end. The free end of the rod' 37' is also centrally and laterally vvide a passage 42 that is connected, by means o a. pipe 43, with the bottom of the 'receptacle' l, an air-tight jointl being provided between the cover and the pipe at the Y sages' r Viary outlet cham drilled to pro' essere point where the pipe passesA through the cover,z Screwed into theend of therod 37 is a member 44 having a conical end and a central aperture forming an extension of the passage d2.. By adjusting the position of the cap 41 longitudinally of the end of the rod 37, the rate .of airdisch'arge from the nozzle may be regulated.

U on applying pressure to the plate 28, the all 31 is first raised from its seat and air is then admitted from the inlet chainber 8 to the main outlet chamber l0, from where it is discharged, throu h the passages 39, into the nozzle cham er 40, and from there it escapes into the atmosphere through the annular o ening, the edges of the aperture in the en of the cap 4i and the end of the member dll. ln this mannen suction 'is produced whichltends to draw liquid from the receptacle lthroughthe pipe 43 andthe passage 4:2.. As the piston 27 is pressed inwardly, air is also admitted from the chamber l0 to the chamber 9, from which it may escape into the atmosphere through the aperture 13 in the screw l2 until the ball reaches its seat. lWhen the piston 27 reaches the inner limit of its travel, the ball 35 closes the aperture i3, and air pressure is then admitted, through the passage 2d, to the receptacle, where itis applied to the surface or' the liquid, and acts as ythe main force in effecting its discharge through the pipe 43 and the passage 42, the

liquid being atomized as it is discharged at' the nozzle.' Upon relieving the pressure upon the plate 28, the ball 35 first recedes from its seat, and the air pressure within the chamber 9 and the receptacle l isrelieved, because the passage 24: and the aperture 13 provide communlcation between the same and the exterior. rllhe how of air through the main outlet chamber l0 into the nozzle chamber does not stop until the plat/e 28 and the pistons 26 and 27 have been fully restored to their normal positions. through the nozzle after the pressure with- 'lhe continuance of the dow of air` in the receptacle is 'relieved is-important because it serves to clean the nozzle after the pressure `upon the surface of the liquid is relieved.. A'

" ll claim as my invention:

l. lln a device oi the character'desci'ibed, i

the combination with a closed receptaele, and a 'member having an inlet chamber, main and auxiliary outlet chambers'ypasctivelv connect' the inlet and auxiliary :outlet chambers wit the main outlet chamber, and assages between the auxilher and the interior of the receptacle and between the auxiliary outlet chamber and the-exterior, of normally closed manually operable valves for governing com- *munication between the inlet and main outlet'l lchsunbers 'and between lthe main and auxiliary outlet chambers, means for cutlet and auxiliary outlet chambers being of bers with the main outlet chamber, and passages between the auxiliary outlet chamber and the interior ofthe receptacle and between -i `tion of the said passages with the larger ting of communication of the auxiliary outlet'chamber with the exterior, and a nozzle having outlet plassagest that communicate res actively wit the interior of the receptac e and with the main outlet chamber.

2. In a device of the character described, the combination with a closed receptacle, and a member having an inlet chamber, main and` auxiliary outlet chambers, the inlet andauxiliary outlet chambers being of larger sizeat one end than at the other end, passages respectively connecting the smaller ends of the inlet and auxiliary outlet chambers with the main outlet chamber, and passages between the auxiliary outlet chamber and the interior of the receptacle and between the auxiliary outlet chamber and the exterior, of connected pistons operating in the smaller ends of the inlet and auxiliary outlet chambers and governing communication of the said passages with the larger ends of the said chambers, anda nozzle having outlet passagesV that communicate respectivel .with the interior of the receptacle an with the main outlet chamber.

3. In a device of the character described, the combination with a closed receptacle, and a member having an inlet chamber, main and auxiliary outlet chambers, the inlarger size at one end than at the other end', passages respectively connecting the smaller ends of the inlet and auxiliary outlet chambers with the main outlet chamber, and passages between the auxiliary outlet chamber and the interior of the receptacle and between the auxiliary outlet chamber and' the exterior, of connected pistons operating in the smaller ends of the inlet and auxiliary outlet chambers and governing communicaends of the said chambers, means independ-g ent of said pistons for regulating the degree of communication between the main and auxiliary outlet chambers, anda nozzle having outlet assages that communicate re-` spectively wit the interior of the receptacle and with the main outlet chamber.

4. In a device of the character described, the combination with a closed receptacle, and a member having an inlet chamber, main and auxiliary outlet chambers, the iiilet and auxiliary outlet chambers being of larger size at one-end than at the other end, passages respectively connecting the smaller ends of the inlet and auxiliary outlet'chainthe auxiliary outlet chamber and the exterior, of connected pistons operating in the smaller ejiids ofthe inletand auxiliary outlet chambers and governin communication of the saidpassages with t e larger ends 'of the said chambers and also governing com- Iinunication of the auxiliary outlet chamber with the exterior, and a nozzle having outlet passages that communicate respectively with. the interior of the receptacle and with the main outlet chamber.

'zov

5. In a device of the character described,

the combination with a closed receptacle, and a member havin' main and auxiliary out et chambers, the inlet and auxiliary youtlet chambers being of.

an inlet chamber,

outlet chambers and governing communication of the lsaid passages with the larger ends of the said chambers, a ball valve actuated bythe piston` in the inlet chamber, and an inlet pi e o ening into the larger end of the inlet c am er, and a nozzle having outlet passa es that communicate respectively with the interior of the receptacle and with the main outlet chamber.

6. In a device of the character described, the combination with a.'closed receptacle, and a member having an inlet chamber, main and auxiliary outlet chambers, the inlet and auxiliary outlet chambers. being of larger size at one end vthat, at the other end, passages respectively connecting the smaller ends of the inlet and auxiliary outlet chambers with the main outlet chamber, and

assages between the auxiliary outlet chamer and the interior of the receptacle and between the auxiliary outlet 4chamber and the exterior, of connected pistons operatin in the smaller ends of the inlet and auxi iary outlet chambers and governin communication of the said passages with the larger ends of the said chambers, a ball GUsfrAvE A.' UnisAcii,` Witnesses:

IOi'ro S. SCHAIRER, B. B. HINES;

valve carried at the inner end ofthe iston iis 

